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Robert Lubos 9866a5229d samples: net: dns_resolve: Improve DHCPv4 handling
There is some ambiguity with the DHCPv4 handling in the dns_resolve
sample. On one hand, the sample uses net_config library, which does
initiate the DHCPv4 on the interface (if enabled) and may block the
initialization until the address is assigned (in case there is no other
statically assigned IPv4 addresses.) On the other hand, the sample
registers for NET_EVENT_IPV4_ADDR_ADD in case DHCPv4 is in use, delaying
the DNS queries until address is assigned.

In case net_config delayed the initialization however, this will not
work, as the event handler will be registered only after DHCPv4 address
is assigned, so the callback will not get executed.

Fix this, by checking if DHCPv4 assigned address already exists on an
interface - if so, schedule DNS queries immediately. Otherwise (for
example in case when net_config was not configured to wait for address)
register an event callback, and schedule queries from there.

Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
2023-07-25 14:18:54 +02:00
.github doc: move requirements to doc/ 2023-07-12 09:13:49 -04:00
arch xtensa: set no optimization for arch_cpu_idle() with xt-clang 2023-07-24 11:07:30 -04:00
boards dts: Move to 'zephyr,memory-attr' 2023-07-25 11:22:10 +02:00
cmake cmake: Fix code relocation functions with absolute paths 2023-07-10 12:05:00 +02:00
doc doc: release: Add DT changes 2023-07-25 11:22:10 +02:00
drivers Revert "gpio: stellaris: implement gpio_pin_get_config" 2023-07-25 14:17:11 +02:00
dts input: remove cap1203 kscan-like state report 2023-07-25 11:25:51 +02:00
include/zephyr net: if: Add functions to loop over IPv4/IPv6 addresses 2023-07-25 14:18:54 +02:00
kernel kernel/kheap: move to timepoint API 2023-07-25 09:12:26 +02:00
lib pthread: facilitate dynamically allocated thread stacks 2023-07-24 12:59:43 -04:00
misc misc: generated: update configs.c template with <zephyr/...> prefix 2022-05-09 12:45:29 -04:00
modules tfm: Fix help text for crypto key module functionality 2023-07-25 09:15:32 +02:00
samples samples: net: dns_resolve: Improve DHCPv4 handling 2023-07-25 14:18:54 +02:00
scripts Revert "dts: gen_defines: generate _ORD_STR_SORTABLE" 2023-07-25 14:17:11 +02:00
share cmake: boards: Fix issue with relative paths 2023-06-15 05:10:42 -04:00
snippets snippets: support for EXTRA_DTC_OVERLAY_FILE and EXTRA_CONF_FILE 2023-05-25 13:31:53 +00:00
soc drivers: spi: nrfx: Clean up driver instantiation 2023-07-25 13:41:51 +02:00
submanifests west.yml: allow users to easily add more modules 2021-10-07 13:45:42 +02:00
subsys net: if: Add functions to loop over IPv4/IPv6 addresses 2023-07-25 14:18:54 +02:00
tests tests: net: if: Add tests to verify net_if_ipv4/6_addr_foreach() 2023-07-25 14:18:54 +02:00
.checkpatch.conf checkpatch: Remove ext/ from excludes 2022-11-30 12:06:55 -05:00
.clang-format clang-format: flag *_SECTION_FOREACH as for loop 2023-05-26 11:04:54 -05:00
.codecov.yml yamllint: fix all yamllint comments errors 2023-01-04 01:16:45 +09:00
.editorconfig editorconfig: Improve verbosity 2022-04-28 08:55:39 -04:00
.gitattributes gitattributes: consider SVG files generated 2021-10-14 12:42:44 -04:00
.gitignore scripts: ci: check_compliance: add a no-modules Kconfig check 2023-07-05 09:11:02 +02:00
.gitlint gitlint: Stop ignoring merge, revert, fixup and squash commits 2022-01-10 08:13:36 -05:00
.mailmap mailmap: sort alphabetically 2023-05-15 13:23:32 -04:00
.yamllint scripts: compliance: add support for YAMLLint 2023-01-04 17:29:23 +01:00
CMakeLists.txt cmake/compiler: Add linker_script compiler property 2023-07-06 11:43:09 +02:00
CODE_OF_CONDUCT.md
CODEOWNERS drivers: ipm: added IPM over IVSHMEM driver 2023-07-20 10:44:57 +00:00
CONTRIBUTING.rst doc: Fixed a link in CONTRIBUTING.rst 2019-02-28 12:46:04 -08:00
Kconfig kconfig: Clean up header comments and make them consistent 2019-11-04 17:31:27 -05:00
Kconfig.zephyr kconfig: expand the CLEANUP_INTERMEDIATE_FILES symbol description 2023-07-19 20:46:51 -04:00
LICENSE
MAINTAINERS.yml MAINTAINERS: Add bbilas as LED collaborator 2023-07-25 09:15:56 +02:00
README.rst readme: Add support for light/dark modes in the logo 2022-11-18 08:58:59 +01:00
VERSION release: bump main to v3.4.99 2023-06-16 13:29:34 -04:00
version.h.in cmake: generalize VERSION infrastructure for better reuse 2023-05-17 13:56:58 +02:00
west.yml west.yml: update hal_espressif to fix Wi-Fi label redeclaration 2023-07-25 09:14:45 +02:00
zephyr-env.cmd
zephyr-env.sh everywhere: fix typos 2022-03-18 13:24:08 -04:00

.. raw:: html

   <a href="https://www.zephyrproject.org">
     <p align="center">
       <picture>
         <source media="(prefers-color-scheme: dark)" srcset="doc/_static/images/logo-readme-dark.svg">
         <source media="(prefers-color-scheme: light)" srcset="doc/_static/images/logo-readme-light.svg">
         <img src="doc/_static/images/logo-readme-light.svg">
       </picture>
     </p>
   </a>

   <a href="https://bestpractices.coreinfrastructure.org/projects/74"><img
   src="https://bestpractices.coreinfrastructure.org/projects/74/badge"></a>
   <a
   href="https://github.com/zephyrproject-rtos/zephyr/actions/workflows/twister.yaml?query=branch%3Amain">
   <img
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The Zephyr Project is a scalable real-time operating system (RTOS) supporting
multiple hardware architectures, optimized for resource constrained devices,
and built with security in mind.

The Zephyr OS is based on a small-footprint kernel designed for use on
resource-constrained systems: from simple embedded environmental sensors and
LED wearables to sophisticated smart watches and IoT wireless gateways.

The Zephyr kernel supports multiple architectures, including ARM (Cortex-A,
Cortex-R, Cortex-M), Intel x86, ARC, Nios II, Tensilica Xtensa, and RISC-V,
SPARC, MIPS, and a large number of `supported boards`_.

.. below included in doc/introduction/introduction.rst


Getting Started
***************

Welcome to Zephyr! See the `Introduction to Zephyr`_ for a high-level overview,
and the documentation's `Getting Started Guide`_ to start developing.

.. start_include_here

Community Support
*****************

Community support is provided via mailing lists and Discord; see the Resources
below for details.

.. _project-resources:

Resources
*********

Here's a quick summary of resources to help you find your way around:

* **Help**: `Asking for Help Tips`_
* **Documentation**: http://docs.zephyrproject.org (`Getting Started Guide`_)
* **Source Code**: https://github.com/zephyrproject-rtos/zephyr is the main
  repository; https://elixir.bootlin.com/zephyr/latest/source contains a
  searchable index
* **Releases**: https://github.com/zephyrproject-rtos/zephyr/releases
* **Samples and example code**: see `Sample and Demo Code Examples`_
* **Mailing Lists**: users@lists.zephyrproject.org and
  devel@lists.zephyrproject.org are the main user and developer mailing lists,
  respectively. You can join the developer's list and search its archives at
  `Zephyr Development mailing list`_. The other `Zephyr mailing list
  subgroups`_ have their own archives and sign-up pages.
* **Nightly CI Build Status**: https://lists.zephyrproject.org/g/builds
  The builds@lists.zephyrproject.org mailing list archives the CI nightly build results.
* **Chat**: Real-time chat happens in Zephyr's Discord Server. Use
  this `Discord Invite`_ to register.
* **Contributing**: see the `Contribution Guide`_
* **Wiki**: `Zephyr GitHub wiki`_
* **Issues**: https://github.com/zephyrproject-rtos/zephyr/issues
* **Security Issues**: Email vulnerabilities@zephyrproject.org to report
  security issues; also see our `Security`_ documentation. Security issues are
  tracked separately at https://zephyrprojectsec.atlassian.net.
* **Zephyr Project Website**: https://zephyrproject.org

.. _Discord Invite: https://chat.zephyrproject.org
.. _supported boards: http://docs.zephyrproject.org/latest/boards/index.html
.. _Zephyr Documentation: http://docs.zephyrproject.org
.. _Introduction to Zephyr: http://docs.zephyrproject.org/latest/introduction/index.html
.. _Getting Started Guide: http://docs.zephyrproject.org/latest/develop/getting_started/index.html
.. _Contribution Guide: http://docs.zephyrproject.org/latest/contribute/index.html
.. _Zephyr GitHub wiki: https://github.com/zephyrproject-rtos/zephyr/wiki
.. _Zephyr Development mailing list: https://lists.zephyrproject.org/g/devel
.. _Zephyr mailing list subgroups: https://lists.zephyrproject.org/g/main/subgroups
.. _Sample and Demo Code Examples: http://docs.zephyrproject.org/latest/samples/index.html
.. _Security: http://docs.zephyrproject.org/latest/security/index.html
.. _Asking for Help Tips: https://docs.zephyrproject.org/latest/develop/getting_started/index.html#asking-for-help